Please evaluate my system...

Tim, it sounds like , in all, you are quite happy with your system and in all, are quite satisfied with what you hear. While upgrades, or supposed upgrades will always be a part of the audiophile bug, there will always be fan boys (who mean well) that want to sell you on what they like. I’m sure you have what you have, at least for now, for a good reason and it is all good stuff. Take most to heart, those who have suggested using what you have and making little tweaks that may or may not help - speaker placement, minor adjustments to room treatment, experiment with cost effective dampening, coupling or isolation products or methods and better electrical connections, etc. Sometimes, very little changes in any, or all of these things can make for a real "WOW, I’d never have thought" experience...JMO...Jim